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Hyperacute multi-organ thromboembolic storm in COVID-19: a case report
We report a 66-year-old female patient with post-mortem diagnosis of COVID-19 who presented progressive livedo racemosa, acute renal failure and myocardial injury, as well as an absence of respiratory symptoms. Transthoracic echocardiography showed severe spontaneous echo contrast in the right cardiac chambers and right-sided cardiac overload presumed to result from pulmonary microvascular thrombosis or embolism.d-dimer levels were increased. The patient developed an acute ischemic stroke and died 2  days following presentation despite therapeutic anticoagulation. Her predominantly thromboembolic presentation supports the...
Source: Journal of Thrombosis and Thrombolysis - June 5, 2020 Category: Hematology Source Type: research

Incidence and consequences of systemic arterial thrombotic events in COVID-19 patients
AbstractA high incidence of thrombotic events, particularly deep vein thrombosis and pulmonary embolism, has been clearly documented in COVID-19 patients. In addition, small series of patients with coronary, cerebrovascular and peripheral arterial thrombotic events have also been reported, but their true incidence and consequences are not well described, and constitute the objective of this study. From February 1st to April 21st, 2020, 2115 COVID-19 patients were treated at Hospital Universitario Fundaci ón Alcorcón (Madrid, Spain), and 1419 were eventually admitted. Patient characteristics and outcomes were collected by...
Source: Journal of Thrombosis and Thrombolysis - June 8, 2020 Category: Hematology Source Type: research

Increased rates of hand ischemia following arterial cannulation in patients with severe COVID19-related pneumonia
Thrombotic complications in patients with COVID19 infection are increasingly reported due to the hypercoagulable state induced by the disease [1 –3]. In particular, arterial thromboembolism has been described in up to 4% of patients, with ischemic stroke being the most common thrombotic event [2]. While catheter-related upper extremity venous thromboses are anecdotally reported [4,5], at the moment no reports are available regarding upper extremity arterial thrombosis following cannulation.
Source: Thrombosis Research - June 14, 2020 Category: Hematology Authors: Walter Dorigo, Aaron Fargion, Laura Paperetti, Roberto Falso, Manuela Bonizzoli, Paolo Fontanari, Loredana Poggesi, Carlo Pratesi Tags: Letter to the Editors-in-Chief Source Type: research

Thromboembolic events related to atrial fibrillation during the COVID-19 epidemic in Denmark
The COVID-19 epidemic has threatened to overwhelm the health-care systems of European countries resulting in government decisions of extensive societal lockdowns. There have been considerable concerns regarding the collateral effects of the COVID-19 epidemic overshadowing the care of patients with other medical conditions including cardiovascular diseases. Of interest, decreases in the registered incidences of atrial fibrillation (AF) and ischemic stroke have been reported [1,2]. AF is a common reason for physician contact and AF patients are often recommended treatment with oral anticoagulants to mitigate the associated r...
Source: Thrombosis Research - July 29, 2020 Category: Hematology Authors: Peter Vibe Rasmussen, Paul Blanche, Jarl Emanuel Strange, Jawad Haider Butt, Frederik Dalgaard, Kristian Kragholm, Matthew Phelps, Gunnar Gislason, Morten Lock Hansen Tags: Letter to the Editors-in-Chief Source Type: research

Heparin-induced thrombocytopenia and thrombosis in a patient with Covid-19
Covid-19 has significant implications of hematologic systems, including lymphocytopenia, thrombocytopenia, ischemic or hemorrhagic stroke, pulmonary thromboembolism, and myocardial infarction [1,2]. Iwasaki et al. reported that the pathogen of Covid-19, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), can induce immune dysfunction, inflammation, and antibody-dependent enhancement by activating host cells via the Fc γIIa receptor in the same way as SARS-CoV-1 [3].
Source: Thrombosis Research - August 2, 2020 Category: Hematology Authors: Ching-Tai Huang, Shao-Yun Hsu, Ko-Wei Chang, Chung-Guei Huang, Cheng-Ta Yang, Ming-Huei Cheng Tags: Letter to the Editors-in-Chief Source Type: research

Coagulopathy and thromboembolic events in patients with SARS-CoV-2 infection: pathogenesis and management strategies
AbstractIn October 2019, a viral infectious disease appeared in the city of Wuhan in China. A new betacoronavirus, SARS-CoV-2, has been recognized as the responsible pathogen in this infection. Although coronavirus disease is principally expressed as a pulmonary infection, critical SARS-CoV-2 infection is frequently complicated with coagulopathy, and thromboembolic events are recognizable in several patients. Dehydration, acute inflammatory condition, protracted immobilization during disease, existence of multiple cardiovascular risk factors such as diabetes, obesity or hypertension, previous coronary artery disease, ische...
Source: Annals of Hematology - August 13, 2020 Category: Hematology Source Type: research

COVID-19 versus HIT hypercoagulability
A striking feature of COVID-19 is the high frequency of thrombosis, particularly in patients who require admission to intensive care unit because of respiratory complications (pneumonia/adult respiratory distress syndrome). The spectrum of thrombotic events is wide, including in situ pulmonary thrombosis, deep-vein thrombosis and associated pulmonary embolism, as well as arterial thrombotic events (stroke, myocardial infarction, limb artery thrombosis). Unusual thrombotic events have also been reported, e.g., cerebral venous sinus thrombosis, mesenteric artery and vein thrombosis.
Source: Thrombosis Research - August 8, 2020 Category: Hematology Authors: Theodore E. Warkentin, Scott Kaatz Tags: Review Article Source Type: research

Immunothrombosis and thromboinflammation in host defense and disease.
Authors: Martinod K, Deppermann C Abstract Platelets are increasingly being recognized for playing roles beyond thrombosis and hemostasis. Today we know that they mediate inflammation by direct interactions with innate immune cells or secretion of cytokines/chemokines. Here we review their interactions with neutrophils and monocytes/macrophages in infection and sepsis, stroke, myocardial infarction and venous thromboembolism. We discuss new roles for platelet surface receptors like GPVI or GPIb and also look at platelet contributions to the formation of neutrophil extracellular traps (NETs) as well as to deep vein ...
Source: Platelets - September 10, 2020 Category: Hematology Tags: Platelets Source Type: research

D-dimer level in COVID-19 infection: a systematic review.
Authors: Rostami M, Mansouritorghabeh H Abstract INTRODUCTION: COVID-19 disease has spread worldwide from December 2019 to the present day; the early stage of this disease can be associated with high D-dimer, prolonged PT, and elevated levels of fibrinogen, indicating activation of coagulation pathways and thrombosis. In this article, we analyze the levels of D-dimer in patients with COVID-19. AREA COVERED: In the current study, three databases, PubMed, Scopus, Web of Science, searched using related keywords and information extracted from articles such as location, sample size, gender, age, coagulation test val...
Source: Expert Review of Hematology - October 1, 2020 Category: Hematology Tags: Expert Rev Hematol Source Type: research

The effect of race on composite thrombotic events in patients with COVID-19
COVID-19 associated coagulopathy and mortality related to thrombotic complications have been suggested as biological mediators in racial disparities related to COVID-19. We studied the adjusted prevalence of acute ischemic stroke, pulmonary embolism, myocardial infarction, and deep venous thrombosis stratified by race in hospitalized patients in one New York City borough during the local COVID-19 surge. The multi-racial cohort included 4,299 patients hospitalized with COVID-19, 9% of whom were white, 40% black, 41% Hispanic and 10% Asian or other.
Source: Thrombosis Research - December 21, 2020 Category: Hematology Authors: Charles Esenwa, Santiago R. Unda, David J. Altschul, Nikunj K. Patel, Avinash Malaviya, Johanna Seiden, Andrea Lendaris, Khadean Moncrieffe, Daniel L. Labovitz Tags: Letter to the Editors-in-Chief Source Type: research

Pulmonary venous thrombosis in a patient with COVID-19 infection
ConclusionsThrombotic outcomes in the setting of severe COVID 19 pneumonia may include macrovascular venous thromboembolism, microvascular pulmonary vascular thrombosis and arterial thromboembolism. Pulmonary vein, herein described, provides further mechanistic pathway for potential arterial embolic phenomenon.
Source: Journal of Thrombosis and Thrombolysis - January 30, 2021 Category: Hematology Source Type: research

Risk factors for intracerebral hemorrhage in patients with COVID-19
AbstractIntracerebral hemorrhage (ICH) can be a devastating complication of coronavirus disease (COVID-19). We aimed to assess risk factors associated with ICH in this population. We performed a retrospective cohort study of adult patients admitted to NYU Langone Health system between March 1 and April 27 2020 with a positive nasopharyngeal swab polymerase chain reaction test result and presence of primary nontraumatic intracranial hemorrhage or hemorrhagic conversion of ischemic stroke on neuroimaging. Patients with intracranial procedures, malignancy, or vascular malformation were excluded. We used regression models to e...
Source: Journal of Thrombosis and Thrombolysis - April 29, 2021 Category: Hematology Source Type: research

Thrombosis in Covid-19 and non-Covid-19 pneumonia: role of platelets
Platelets. 2021 Jun 7:1-9. doi: 10.1080/09537104.2021.1936478. Online ahead of print.ABSTRACTPlatelets may be a target of bacteria and viruses, which can directly or indirectly activate them so promoting thrombosis. In accordance with this, community-acquired pneumonia (CAP) is complicated by ischemia-related vascular disease (myocardial infarction and stroke) in roughly 10% of patients while the incidence of venous thrombosis is uncertain. In CAP platelet biosynthesis of TxA2 is augmented and associated with myocardial infarction; however, a cause-effect relationship is still unclear as unclear is if platelet activation p...
Source: Platelets - June 7, 2021 Category: Hematology Authors: Francesco Violi Vittoria Cammisotto Pasquale Pignatelli Source Type: research

Interaction between thrombin potential and age on early clinical outcome in patients hospitalized for COVID-19
AbstractPatients with Coronavirus Disease-2019 (COVID ‐19) have haemostatic dysfunction and are at higher risk of thrombotic complications. Although age is a major risk factor for outcome impairment in COVID-19, its impact on coagulative patterns here is still unclear. We investigated the association of Endogenous Thrombin Potential (ETP) with thromb otic and haemorrhagic events according to different ages in patients admitted for COVID-19. A total of 27 patients with COVID‐19-related pneumonia, without need for intensive care unit admission or mechanical ventilation at hospital presentation, and 24 controls with non-C...
Source: Journal of Thrombosis and Thrombolysis - June 10, 2021 Category: Hematology Source Type: research

Suggested treatment of serious complications to Covid-19 vaccination with IdeS, a bacterial antibody-cleaving enzyme
J Thromb Haemost. 2021 Jun 24. doi: 10.1111/jth.15433. Online ahead of print.ABSTRACTSeveral recent reports have independently described a rare thrombosis with thrombocytopenia syndrome (TTS) post vaccination with ChAdOx1 nCoV-19. In J. Thromb. Haemost., Ankerlund Blauenfeldt et al. [1] described the clinical presentation of a case of fatal acute ischemic stroke associated with profound thrombocytopenia. The pathogenesis behind this case may involve mechanisms similarly to autoimmune heparin-induced thrombocytopenia (HIT) since anti-platelet factor 4(PF-4) antibodies were detected in the patient plasma.PMID:34165239 | DOI:10.1111/jth.15433
Source: Thrombosis and Haemostasis - June 24, 2021 Category: Hematology Authors: Fredrik Kahn Oonagh Shannon Lars Bj örck Source Type: research

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